I want to take high speed shots. My problem is I don't want to buy an expensive flash, so I thought let me make a sound activated shutter. In other words the moment their is a sound my camera takes a picture. After spending hours on the internet I was only able to find circuits that give me and output of 400 volts. Link 1 link 2 link 3 link 4 link 5 Yes I do know that all of those are meant for flashes but found a way to that output into my camera, I just can't have 400 volts coming out of their.